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    Function Description        X735 V3.0       
     
   
 
Power Jack, power input and power output
4-Pin Header
  Power input via
  Type-C / Micro-USB
 5Vdc +/- 5% , ≥3A
  Power input via
  DC jack (5.5*2.1mm)
 6~30Vdc, ≥2A
  Micro USB power socket  Pin 1 - 5Vdc, Pin 5 - GND
  Power input / output
  connector
 XH2.54mm 2pin
Jumper No. Usage
Pin1 and Pin2
 Short - Auto power-on when power applied
 Open - Auto power-on disabled
Pin3 and Pin4
 Short - Fan controlled by GPIO13
 Open - Fan running at full speed, not GPIO
              controlled
 
 
Connectors for External Power Switch
Using momentary power button
Pin No. Pin Description
1  Power on/off control connecting to switch
2  Ground
3  Ground
4  LED+ for power on, rebooting and shutdown

 Connector - Pitch 2.0mm 4pos
Press and Release  Raspberry Pi and X735 turn on
 Power LED stays on
Press and hold for 1~2 seconds  System rebooting 
 Power LED Blinks rapidly
Press and hold for 3~7 seconds  System shutting down 
 Power LED Blinks slowly
Press and hold for >8 seconds  Force shutdown

*Script for power management installed
 
 
Pins and GPIO used
 
Pin No. Usage
2, 4  +5V power supply
6  Ground 
29  GPIO5 for power management
32  GPIO12 for power management 
38  GPIO20 for power management
33  GPIO13 for PWM fan speed control 
36  GPIO16 for PWM fan speed reading 
 
     
 
     
    Board Assembly
     
 
Push a screws (M2.5*6mm) up through the mounting hole on the underside of the Raspberry Pi.
 
Screw the spacer (M2.5*12mm) down until it is hand tight
 
     
Plugs the X735 board straight into your Raspberry Pi B+'s GPIO header and screw down (M2.5*6mm)
 
Optional -To use with X820/X850/X822/X852/X860/X870
 a) Unscrew 4 screws on the topside of Raspberry pi
 b) Screw the M/F spacer (M2.5*12 / M2.5*20) down until it is
     hand tight
 
     
Plugs the X735 straight into your Raspberry Pi's GPIO header and screw down (M2.5*6mm)
 
Connect the 2-pin power connection wire from the 5V connector on X735 to X820/X850/X822/X852/X860/X870

Power adapter must be connected to power management     board only , not X860 and Raspberry Pi
 
     
 
 
       
 
     
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